Chemistry, 07.12.2021 19:30, Mckenzie8062
Q1. Which are characteristics of a mixture? (Select all that apply.)
made up of two or more substances
can be evenly mixed
can appear unevenly mixed
are chemically combined
Answers: 1
Chemistry, 23.06.2019 07:30, lifeislove3251
Type the letter that represents the correct location for each particle type below. the neutron is found at __ the electron is found at __ the proton is found at __
Answers: 1
Chemistry, 23.06.2019 08:50, leah5981
Reacting masses1 calcium carbonate breaks down on heating to produce calcium oxide and carbondioxide gas. caco3 + cao + co2a student heats 15 g of calcium carbonate strongly in a crucible. relative atomic masses (a): ca = 40, c = 12, o = 16.calculate the mass of calcium oxide produced by this reaction.(5 marks)
Answers: 3
Chemistry, 23.06.2019 09:00, sammypaige08
A0.10 m aqueous solution of sodium sulfate is a better conductor of electricity than a 0.10 m aqueous solution of sodium chloride. which of the following best explains this observation? (a) sodium sulfate is more soluble in water than sodium chloride. (b) sodium sulfate has a higher molar mass than sodium chloride. (c) to prepare a given volume of 0.10 m solution, the mass of sodium sulfate needed is more than twice the mass of sodium chloride needed. (d) more moles of ions are present in a given volume of 0.10 m sodium sulfate than in the same volume of 0.10 m sodium chloride. (e) the degree of dissociation of sodium sulfate in solution is significantly greater than that of sodium chloride.
Answers: 2
Q1. Which are characteristics of a mixture? (Select all that apply.)
made up of two or more substa...
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